4g seminar2

8/7/2019 4G SEMINAR2

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SEMINAR

PRESENTATION ON

FOURTH GENERATION COMMUNICATIONS

PRESENTED BY



FOURTH GENERATION COMMUNICATIONS



4G HISTORY

A 4G (fourth generation) system will be able to provide a

comprehensive IP solution where voice, data and streamed

multimedia can be given to users on an "Anytime, Anywhere" basis

and at higher data rates than previous generations such as Second

and Third generation¶s (2G-4G).

Evolution from 2G to 4G

Evolution from 2G to 3G can be sub-divided into following phases:

2G to 2.5G

2.5G to 2.75G

2.75G to 3G THEN CAME 4G



4G HISTORY

From 2G to 2.5G (GPRS)

The first major step in the evolution to 3G occurred with the

introduction of General Packet Radio Service (GPRS). So the

cellular services combined with GPRS became 2.5G.

GPRS could provide data rates from 56 kbit/s up to 114 kbit/s.

From 2.5G to 2.75G

GPRS networks evolved to EDGE networks with the introduction of

8PSK encoding. Enhanced Data rates for GSM Evolution (EDGE)EDGE is standardized by 3GPP as part of the GSM family, and it is

an upgrade that provides a potential three-fold increase in capacity

of GSM/GPRS,EDGE can be used for any packet switched application,

such as an Internet, video and other multimedia.



4G HISTORY

From 2.75G to 3G

From EDGE networks the introduction of UMTS networks and

technology is called pure 3G. 3G Bandwidth 5 MHz

From 3G to 4G

From 3G networks the introduction of OFDM,MIMO technology¶sis called pure 4G.



What is 4G ?

Fourth generation wireless system is a packet switched wireless

System with wide area coverage and high throughput.

It is designed to be cost effective and to provide high spectral

efficiency.

One of the terms used to describe 4G is MAGIC.

M - Mobile multimedia

A - Anytime anywhereG - Global mobility support

I - Integrated wireless

C - Customized personal service.



MORE 4G

The key concept is integrating the 4G capabilities with all of the

existing mobile technologies through advanced technologies.

Application adaptability and being highly dynamic are the main

features of 4G services of interest to users.

The 4G systems will interoperate with 2G and 3G systems

as well as with digital (broadband) broadcasting systems

Wireless Technologies Used In 4G

1. OFDM (Orthogonal Frequency Division Multiplexing)2. UWB (Ultra Wide Band )

3. MILLIMETERWIRELESS (Millimeter Wireless)

4. SMART ANTENNAS5. LONG TERM POWER PREDICTION (Long Term Power Prediction )



COMPARING DIFFERENT TECHONOLOGIES



COMPONENTS

IPv6

Unlike 3G, which is based on two parallel infrastructures consisting of

circuit switched and packet switched network nodes respectively, 4G

will be based on packet switching only .

WhyWe Use IPv6 instead of IPv4?

Larger address space:



APPICATIONS

At the present rates of 15-30 Mbit/s, 4G is capable of providing users

with streaming high-definition television. At rates of 100 Mbit/s, the

content of a DVD-5 (for example a movie), can be downloaded within

about 5 minutes for offline access.

4G can cope up with existing technologies .

4G used in different services.



DEVELOPMENT

S

The Japanese company NTT DoCoMo has been testing a 4G

communication system prototype with 4x4 MIMO called VSF-OFCDM

at 100Mbit/s while moving, and 1 Gbit/s while stationary. In February

2007, NTT DoCoMo completed a trial in which they reached a

maximum packet transmission rate of approximately 5 Gbit/s

in the downlink with 12x12 MIMO using a 100MHz frequencybandwidth while moving at 10 km/h, and is planning on releasing

the first commercial network in 2010.

MIMO



World's first 4G mobile broadband

TeliaSonera signs world's first 4G mobile broadband deals with Ericsson

and Huawei

28 January 2009In its bid to become among the first operators in the world to launch 4G,

It is to be meet its scheduled 4G roll-out in Stockholm and Oslo commercially

in 2010.

World¶s first 4G mobile broadband

NOTE :

"It will be a joy connecting to services demanding large data volumesor fast data traffic. 4G will be suitable for media and interactiveservices for which timing on the second is essential."



As the history of mobile communications shows, attempts have been

made to reduce a number of technologies to a single global standard.

Projected 4G systems offer this promise of a standard that can be

embraced worldwide through its key concept of integration. Future

wireless networks will need to support diverse IP multimedia

applications to allow sharing of resources among multiple users.

There must be a low complexity of implementation and an efficient

means of negotiation between the end users and the wireless

infrastructure. The fourth generation promises to fulfill the goal of

PCC (personal computing and communication)²a vision that affordably provides high data rates everywhere over a

wireless network

CONCLUSION

4g seminar2

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